I've easily accommodated 17t and 22t cogs with a single 42t chainring on my
QB. With the 42x17 the wheel was at the rearward extremity of the
dropouts; with the 42x22 it wasn't all the way forward, so I could imagine
I could have gone with a bigger difference.
Philip, I'm skeptical that two ch
Segwaying (tm) along this thread, rather than starting a new one, I just
came back from a relatively major grocery and mail run, using the '03
Converted Curt Fixed. 17/19 Dingle with 48 t ring and almost-25" tires
(559X1.35" Kojaks). The cruising 48/17 gives me about a 70" gear (taking
into accoun
Yes to both of you; I did mean change cog and ring together for a bigger
gear change overall. And yes, embiggening the cog by one tooth will make
about twice the gearing change as embiggening the ring by one tooth.
Sorry if I wasn't clear.
Philip
www.biketinker.com
On Tuesday, November 26, 20
I think that Philip means that, if you change the ring inversely in size as
you change the cog, that will give you considerably more ratio variation
than merely changing the cog. But your assertion is correct.
On Tue, Nov 26, 2013 at 8:45 AM, Patrick Moore wrote:
> You've almost got me convince
You've almost got me convinced -- but not quite. Pure aesthetic perversity
makes me see a second chainring as clutter. Longer dropouts, or even the
current dropout moved 1/4" forward -- should be easy for a builder to do,
no? -- will give me a 3 cog tolerance. Of course, builder will also have to
m
Actually, changing the rear cog will give you more of an impact to your
gear change--it's a smaller number, so any given change is a bigger
percentage change.
Eric "WI dual FW AND two rings on my bike" Daume
Dublin, OH
On Tue, Nov 26, 2013 at 1:46 AM, Philip Williamson <
philip.william...@gmail.
Two chainrings is way slicker. Better chainline in each gear, more gear
difference per rear tooth change, and two gears with a clean fender line in
each. The only reason I have a single ring on the Quickbeam is because I
put an older, prettier Shimano 600 crank on it, and it sits too close to
t
The White Industries double freewheels use 8-speed chains, which opens up the
half-link option, in case it doesn't work otherwise.
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That's the way to go, then -- thanks. I could use a 17/21 instead of the
current 17/20, and have a 22 or so for a real bail out.
I've thought of two rings, but frankly prefer the simplicity and hassle of
accommodating 3+ teeth in the back.
On Mon, Nov 25, 2013 at 2:18 PM, Philip Williamson <
phi
I get an easy 4 teeth difference, and I'm pretty sure I could get 8.
Let's see - currently I have a 44t single ring, a 15t fixed cog, and a
Dingle 17-21, and they all work fine with 37mm tires. Significantly fatter
tires keeps the 44/21 from working.
So: Six teeth for sure, with 37mm tires.
Thanks -- what about with a single ring: how many cogs can you get out of
the QB/SO dropout when all is optimized?
On Mon, Nov 25, 2013 at 11:16 AM, Cyclofiend Jim
wrote:
> Didn't realize the Dingle required a 9 sp chain.
>
> My stock gearing setup is the 40/32 front chainring setup with a 14T f
Didn't realize the Dingle required a 9 sp chain.
My stock gearing setup is the 40/32 front chainring setup with a 14T fixed
and 18T FW. The 40x14 (centered) and 40x18 fit easily. The 32x18 is at
the end of the dropout with that chain length.
Hope that helps,
- Jim
On Monday, November 25, 2
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